Adding multi-select patch

README.md

@@ -15,7 +15,7 @@ Refer to [https://tools.suckless.org/dmenu/](https://tools.suckless.org/dmenu/)
 
 ### Changelog:
 
-2020-08-08 - Added the symbols, managed, morecolor and preselect patches
+2020-08-08 - Added the symbols, managed, morecolor, multi-selection and preselect patches
 
 2020-08-05 - Added the grid, highlight, highpriority, dynamic options and numbers patches
 
@@ -95,6 +95,11 @@ Refer to [https://tools.suckless.org/dmenu/](https://tools.suckless.org/dmenu/)
    - [mouse-support](https://tools.suckless.org/dmenu/patches/mouse-support/)
       - adds basic mouse support for dmenu
 
+   - [multi-selection](https://tools.suckless.org/dmenu/patches/multi-selection/)
+      - without this patch when you press `Ctrl+Enter` dmenu just outputs current item and it is not possible to undo that
+      - with this patch dmenu will output all selected items only on exit
+      - it is also possible to deselect any selected item
+
    - [navhistory](https://tools.suckless.org/dmenu/patches/navhistory/)
       - provides dmenu the ability for history navigation similar to that of bash
 

config.def.h

@@ -93,7 +93,7 @@ static int histnodup           = 1;	/* if 0, record repeated histories */
  * Characters not considered part of a word while deleting words
  * for example: " /?\"&[]"
  */
-#if PIPEOUT_PATCH
+#if PIPEOUT_PATCH && !MULTI_SELECT_PATCH
 static const char startpipe[] = "#";
 #endif // PIPEOUT_PATCH
 static const char worddelimiters[] = " ";

dmenu.c

@@ -59,7 +59,11 @@ struct item {
 	#if NON_BLOCKING_STDIN_PATCH
 	struct item *next;
 	#endif // NON_BLOCKING_STDIN_PATCH
+	#if MULTI_SELECT_PATCH
+	int id; /* for multiselect */
+	#else
 	int out;
+	#endif // MULTI_SELECT_PATCH
 	#if HIGHPRIORITY_PATCH
 	int hp;
 	#endif // HIGHPRIORITY_PATCH
@@ -69,7 +73,7 @@ struct item {
 };
 
 static char text[BUFSIZ] = "";
-#if PIPEOUT_PATCH
+#if PIPEOUT_PATCH && !MULTI_SELECT_PATCH
 static char pipeout[8] = " | dmenu";
 #endif // PIPEOUT_PATCH
 static char *embed;
@@ -94,7 +98,11 @@ static int mon = -1, screen;
 #if MANAGED_PATCH
 static int managed = 0;
 #endif // MANAGED_PATCH
-#if PRINTINPUTTEXT_PATCH
+#if MULTI_SELECT_PATCH
+static int *selid = NULL;
+static unsigned int selidsize = 0;
+#endif // MULTI_SELECT_PATCH
+#if PRINTINPUTTEXT_PATCH && !MULTI_SELECT_PATCH
 static int use_text_input = 0;
 #endif // PRINTINPUTTEXT_PATCH
 #if PRESELECT_PATCH
@@ -217,6 +225,9 @@ cleanup(void)
 	drw_free(drw);
 	XSync(dpy, False);
 	XCloseDisplay(dpy);
+	#if MULTI_SELECT_PATCH
+	free(selid);
+	#endif // MULTI_SELECT_PATCH
 }
 
 static char *
@@ -244,7 +255,11 @@ drawitem(struct item *item, int x, int y, int w)
 	else if (item->left == sel || item->right == sel)
 		drw_setscheme(drw, scheme[SchemeMid]);
 	#endif // MORECOLOR_PATCH
+	#if MULTI_SELECT_PATCH
+	else if (issel(item->id))
+	#else
 	else if (item->out)
+	#endif // MULTI_SELECT_PATCH
 		drw_setscheme(drw, scheme[SchemeOut]);
 	else
 		drw_setscheme(drw, scheme[SchemeNorm]);
@@ -755,6 +770,9 @@ keypress(XKeyEvent *ev)
 			goto draw;
 		case XK_Return:
 		case XK_KP_Enter:
+			#if MULTI_SELECT_PATCH
+			selsel();
+			#endif // MULTI_SELECT_PATCH
 			break;
 		case XK_bracketleft:
 			cleanup();
@@ -856,6 +874,7 @@ insert:
 		break;
 	case XK_Return:
 	case XK_KP_Enter:
+		#if !MULTI_SELECT_PATCH
 		#if PIPEOUT_PATCH
 		#if PRINTINPUTTEXT_PATCH
 		if (sel && (
@@ -886,16 +905,22 @@ insert:
 		#else
 		puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
 		#endif // PIPEOUT_PATCH
+		#endif // MULTI_SELECT_PATCH
 		if (!(ev->state & ControlMask)) {
 			#if NAVHISTORY_PATCH
 			savehistory((sel && !(ev->state & ShiftMask))
 				    ? sel->text : text);
 			#endif // NAVHISTORY_PATCH
+			#if MULTI_SELECT_PATCH
+			printsel(ev->state);
+			#endif // MULTI_SELECT_PATCH
 			cleanup();
 			exit(0);
 		}
+		#if !MULTI_SELECT_PATCH
 		if (sel)
 			sel->out = 1;
+		#endif // MULTI_SELECT_PATCH
 		break;
 	case XK_Right:
 		if (text[cursor] != '\0') {
@@ -1026,7 +1051,11 @@ readstdin(void)
 			*p = '\0';
 		if (!(items[i].text = strdup(buf)))
 			die("cannot strdup %u bytes:", strlen(buf) + 1);
+		#if MULTI_SELECT_PATCH
+		items[i].id = i; /* for multiselect */
+		#else
 		items[i].out = 0;
+		#endif // items[i].out = 0;
 		#if HIGHPRIORITY_PATCH
 		items[i].hp = arrayhas(hpitems, hplength, items[i].text);
 		#endif // HIGHPRIORITY_PATCH
@@ -1359,7 +1388,7 @@ usage(void)
 		#if INSTANT_PATCH
 		"n"
 		#endif // INSTANT_PATCH
-		#if PRINTINPUTTEXT_PATCH
+		#if PRINTINPUTTEXT_PATCH && !MULTI_SELECT_PATCH
 		"t"
 		#endif // PRINTINPUTTEXT_PATCH
 		#if PREFIXCOMPLETION_PATCH
@@ -1465,7 +1494,7 @@ main(int argc, char *argv[])
 		} else if (!strcmp(argv[i], "-n")) { /* instant select only match */
 			instant = !instant;
 		#endif // INSTANT_PATCH
-		#if PRINTINPUTTEXT_PATCH
+		#if PRINTINPUTTEXT_PATCH && !MULTI_SELECT_PATCH
 		} else if (!strcmp(argv[i], "-t")) { /* favors text input over selection */
 			use_text_input = 1;
 		#endif // PRINTINPUTTEXT_PATCH

patch/include.c

@@ -15,6 +15,9 @@
 #if HIGHPRIORITY_PATCH
 #include "highpriority.c"
 #endif
+#if MULTI_SELECT_PATCH
+#include "multiselect.c"
+#endif
 #if MOUSE_SUPPORT_PATCH
 #include "mousesupport.c"
 #endif

patch/mousesupport.c

@@ -21,6 +21,16 @@ buttonpress(XEvent *e)
 	/* left-click on input: clear input,
 	 * NOTE: if there is no left-arrow the space for < is reserved so
 	 *       add that to the input width */
+	#if SYMBOLS_PATCH
+	if (ev->button == Button1 &&
+	   ((lines <= 0 && ev->x >= 0 && ev->x <= x + w +
+	   ((!prev || !curr->left) ? TEXTW(symbol_1) : 0)) ||
+	   (lines > 0 && ev->y >= y && ev->y <= y + h))) {
+		insert(NULL, -cursor);
+		drawmenu();
+		return;
+	}
+	#else
 	if (ev->button == Button1 &&
 	   ((lines <= 0 && ev->x >= 0 && ev->x <= x + w +
 	   ((!prev || !curr->left) ? TEXTW("<") : 0)) ||
@@ -29,6 +39,7 @@ buttonpress(XEvent *e)
 		drawmenu();
 		return;
 	}
+	#endif // SYMBOLS_PATCH
 	/* middle-mouse click: paste selection */
 	if (ev->button == Button2) {
 		XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
@@ -60,12 +71,24 @@ buttonpress(XEvent *e)
 		for (item = curr; item != next; item = item->right) {
 			y += h;
 			if (ev->y >= y && ev->y <= (y + h)) {
+				#if !MULTI_SELECT_PATCH
 				puts(item->text);
-				if (!(ev->state & ControlMask))
+				#endif // MULTI_SELECT_PATCH
+				if (!(ev->state & ControlMask)) {
+					#if MULTI_SELECT_PATCH
+					sel = item;
+					selsel();
+					printsel(ev->state);
+					#endif // MULTI_SELECT_PATCH
 					exit(0);
+				}
 				sel = item;
 				if (sel) {
+					#if MULTI_SELECT_PATCH
+					selsel();
+					#else
 					sel->out = 1;
+					#endif // MULTI_SELECT_PATCH
 					drawmenu();
 				}
 				return;
@@ -74,7 +97,11 @@ buttonpress(XEvent *e)
 	} else if (matches) {
 		/* left-click on left arrow */
 		x += inputw;
+		#if SYMBOLS_PATCH
+		w = TEXTW(symbol_1);
+		#else
 		w = TEXTW("<");
+		#endif // SYMBOLS_PATCH
 		if (prev && curr->left) {
 			if (ev->x >= x && ev->x <= x + w) {
 				sel = curr = prev;
@@ -86,21 +113,41 @@ buttonpress(XEvent *e)
 		/* horizontal list: (ctrl)left-click on item */
 		for (item = curr; item != next; item = item->right) {
 			x += w;
+			#if SYMBOLS_PATCH
+			w = MIN(TEXTW(item->text), mw - x - TEXTW(symbol_2));
+			#else
 			w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
+			#endif // SYMBOLS_PATCH
 			if (ev->x >= x && ev->x <= x + w) {
+				#if !MULTI_SELECT_PATCH
 				puts(item->text);
-				if (!(ev->state & ControlMask))
+				#endif // MULTI_SELECT_PATCH
+				if (!(ev->state & ControlMask)) {
+					#if MULTI_SELECT_PATCH
+					sel = item;
+					selsel();
+					printsel(ev->state);
+					#endif // MULTI_SELECT_PATCH
 					exit(0);
+				}
 				sel = item;
 				if (sel) {
+					#if MULTI_SELECT_PATCH
+					selsel();
+					#else
 					sel->out = 1;
+					#endif // MULTI_SELECT_PATCH
 					drawmenu();
 				}
 				return;
 			}
 		}
 		/* left-click on right arrow */
+		#if SYMBOLS_PATCH
+		w = TEXTW(symbol_2);
+		#else
 		w = TEXTW(">");
+		#endif // SYMBOLS_PATCH
 		x = mw - w;
 		if (next && ev->x >= x && ev->x <= x + w) {
 			sel = curr = next;

patches.def.h

@@ -110,6 +110,18 @@
  */
 #define MOUSE_SUPPORT_PATCH 0
 
+/* Without this patch when you press Ctrl+Enter dmenu just outputs current item and it is not
+ * possible to undo that.
+ * With this patch dmenu will output all selected items only on exit. It is also possible to
+ * deselect any selected item.
+ * Also refer to the dmenu_run replacement on the below URL that supports multiple selections.
+ *
+ * This patch is not compatible with the printinputtext and pipeout patches.
+ *
+ * https://tools.suckless.org/dmenu/patches/multi-selection/
+ */
+#define MULTI_SELECT_PATCH 0
+
 /* This patch provides dmenu the ability for history navigation similar to that of bash.
  * https://tools.suckless.org/dmenu/patches/navhistory/
  */
@@ -160,6 +172,9 @@
 /* This patch allows the selected text to be piped back out with dmenu. This can be useful if you
  * want to display the output of a command on the screen.
  * Only text starting with the character '#' is piped out by default.
+ *
+ * This patch is not compatible with the multi-select patch.
+ *
  * https://tools.suckless.org/dmenu/patches/pipeout/
  */
 #define PIPEOUT_PATCH 0
@@ -177,6 +192,9 @@
 
 /* This patch adds a flag (-t) which makes Return key to ignore selection and print the input
  * text to stdout. The flag basically swaps the functions of Return and Shift+Return hotkeys.
+ *
+ * This patch is not compatible with the multi-select patch.
+ *
  * https://tools.suckless.org/dmenu/patches/printinputtext/
  */
 #define PRINTINPUTTEXT_PATCH 0